Pressure-regulator.



e. E, HULsB. -PRESSURE REGULATOR. APILIOATION FILED OUT-L2, 1907. l

Patented Deo. 1,'1908.

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UNiTED sTATEs GEORGE EGBERT HULSE, OF

NEWAEI NEW JERSEY,

PATENT oEEioE.

ASSIGN OR TO SAFETY CAR HEATING Specification of Letters Patent.

Patented Dec. 1, 1908.

Application filed October 2, 1907. Serial No. 395,541.

To all whom 'it may concern.' i

Be it known that 1,. GEORGE EGBERT Essex and State of NewJersey,` have invented certain new and useful Improvements in Pressure-Regulators, of whichV the following isV a full, cleaiyand exact descrip- HULsE, residing at Newark, in the county of tion, such as will enable others skilled inthe art to which it appertains to make'and use the same.

This invention relates ,to lighting ap iatus and is more especially ldirected to O'as l u o lighting apparatus adapted for use in railway cars or similar structures.V

improved regulator for tems the use of which One of the objects provide new and improved means whereby the gas pressure to the lamps or other gas utilizing' devices may be varied. at will.

Another object of the invention is` to provide in a gas lighting system of the above character a new and improved device for regulating the` utilizing devices at two or more given pressures.

. A further object is to provide a new and saving of gas.

Other objects will be in in part pointed out hereinafter.

In the accompanying drawings,'wherein is illustrated one of the various possible embodiments of my invention, Figure 1 is a part obvious and improved regulator, shown in side elevation. Fig. y2 is a similar view taken through a portion thereof, `but showing a different adjustment of the valve. Similar reference characters refer to similar parts in both views of the` drawings.

Referring now to the nipple 2, through which gas is conducted from a suitable source of supply to the interior ofthe casing, the flow thereof means of a valve 3 which, in the present instance, takes against a valve easing 5 located interiorly of casing 1. A. flexible diaphragm 6 is clamped at its outer edges between the upper portion of casing 1 an a` cover section 7, said diaof my invention is to gas pressure having means i2l `whereby the gas may be supplied to the gas lighting sysr will effect a great b eing controlled by.

a seat 4 `formed in phragin being tightly stretched across the casing. A` second diaphragm 8 is clamped kat its outer Vedges to an inwardly extending annular ledge 9 of casing l, and the central portions ofdiaphragms 6 and 8 are con- `nectedbymeans of a clamp plate 10 and `clamping rings 11 and 12, secured together, ythe present instance, by screws 13. It will be observed that diaphragm 8 is of a jconsiderably smaller area than diaphragm 6 and is secured at a distance beneath the same :to provide a space 14 the purpose of which will be apparent hereinafter. extends through the diaphragms and clamp "plate 10 and. is held in position by means of a` nut 16 and a clamp or lock bolt 17 threaded into the upper end of bolt 15. The `lower end of bolt is connected by means upon which is mounted the stem 20 of valve 53 by means of the usual spring adjustment laminated leaf-spring 22 is secured at one end to lever 19 and at its opposite end is attached to a bracket 23 fastened within the casing. Spring 22 through lever 19 resists the distentions of diaphragms 6 and 8.

vLeadi g from an exit opening 24 of the 'l which is adapted to conduct the gas from the pressure chamber ,of the regulator to the `gas utilizing devices, land leading from conduit 25 is a by-pass conduit 26 which leads into the space 14 ro- Ivided between diaphragms 6 and 8. be; understood, of course, that conduit 26 j y 4could lead directly from the pressure chamsoine of the parts being ber to the space between the diaphragms. This by-pass conduit, in the present instance, is provided with a three-way cock 27 adapted when adjusted in the position shown in Fig. 1 to allow gas to be conducted from the pressure chamber through conduits, 25

and 26 to th'e space 14 provided between the tionshown in Fig. 2, gas through by-pass conduit 26 isshut ofl' and space 14 vented to the atmosphere through a passage way 28 of thevalve and a vent pipe 29.

Having thus described the structure of this embodiment of my invention, the operai tion thereof, which should to a large extent be obvious, is substantially as follows: With llaving described my invention what l the three-way cock adjusted to the position claim and desire to secure by Letters latshown in Fig. l of the drawings, the gas ent is: pressure above and below diaphragm S is 1. In a pressure regulator, m combinaequalized inasmuch as the spaces below and tion, a casing having gas inlet and exit above the same are connected by means oit conduit 25 and by-pass conduit 26. This adjustment of the parts will give the lowest outlet pressure inasmuch as the gas pressure within the valve chamber operates upon the interior surface of the smaller diaphragm 8 and the portion of the larger diaphragm 6 exterior thereto. lVhen, however, the threeway cock is adjusted to the position shown in Fig. 2 of the drawings, the `flexible wall ot the pressure chamber is restricted to the size of diaphragm 8, the underside of the large diaphragm 6 being relieved or' the pressure through vent pipe 39. This restriction of the size of the diaphragm will, ot course, require a higher pressure of gas to distend it and therefore a higher outlet pressure will obtain.

It will accordingly be seen that have provided a regulator well adapted to attain the several ends and objects of my invention in an exceedingly simple yet etiicient manner. That my improved regulator will effeet a great saving of gas is apparent when it is considered that in railway trains it is customary to light the several lamps ot the train while the cars are in the yard or station and not yet open to the public. lt is possible by employing my invention to reduce the gas pressure so as to have the lamps by merely turning the burn low or dim three-way cock to the position shown m Fig. l of the drawings. lhen it is desired to burn the lights to full capacity it is merely necessary to manipulate the threeway controlling cock. ln both adjustments of the cock the gas pressure will be automatically regulated. ln order to attain a similar object in gas lighting systems as heretofore provided, it has been necessary for a trainman or other employee to manipulate the valve of the individual lamps. lt will also be readily seen that the size of the diaphragms may be proportioned to furnish the gas to the utilizing system at any desired degree of pressure. `While l have shown my improved regulator in the above relation, it is apparent that the same may be advantageously employed in other relations although the same is particularly well adapted for use in the relation shown.

As many changes could be made in the above construction and many apparently widely different embodiments ot' this invention could be made without departing from the scope thereof, it is intended that all mati ter contained in the above description ori shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

openings, a valve tor controlling the How ol" gas through the inlet opening, a plurality ot diaphragms located in said casing, portions of which lie in contact with each other and other portions of which are spaced apart, a ey-pass connecting the pressure chamber ot' said casing with the space between said diaphragms, and means for closing said by-pass and for venting the space between said diaphragn'is to the atmosphere.

2. In a. pressure regulator, in combination, a casing having gas inlet and outlet openings, a valve for controlling the tlow ot gas through the inlet opening, a iiexible dia` phragm stretched across said casing, a second diaphragm stretched across said casing, portions ot said diaphragms lying in contact and other portions thereof being spaced apart, and means whereby the gas pressure nay be exposed to one of said diaphragms o the exclusion of the other, or to said lirst diaphragm and a portion of the other.

3. ln a pressure regulator, in combination, a casing having gas inlet. and outlet mission of gas to the casing, a large diaphragm stretched across said casing and roi-ming a wall of the pressure chamber thereot', a smaller diaphragm also stretched across said casing and connected with said .irst diaphragm, both oi said diaphragms being connected with said valve, and n'ieans whereby the gas pressure may be exposed to the under side ot said small diaphragm or to the under side oi? said small diaphragm and a portion of the under snrtaee ot said large diaphragm,

si. ln a pressure regulator, in combination, a casing having gas inlet and discharge openings, a valve located in said inlet open- ,ng and adapted to control the flow oi'i gas therethrough, a liexible diaphragm stretched across said easing to form a wall ot the pressure chamber, a` ledge extending inwardly from said casing beneath said diaphragm, a diaphragm secured to said ledge, means 'tor clamping the central portions ot said diaphragms together, an annular space, being` provided between said diaphragms, means whereby the pressure chamber may be conned to the walls of the casing and the portion thereof formed by said second mentioned diaphragm, and means whereby the same may be conlined by the walls oit the casing and said secondy diaphragm together with the portion ot the first diaphragm out of contact therewith.

tion, a casing provided with gas inlet and exit openings, a valve for controlling tl i ad connections, a valve tor controlling the ad- 5. ln a pressure regulator` in combinamission of gas to said casing through 'said tween said diaphragms, and a valve for coninlet opening, a pair of diaphragms of diftrolling the flow of gas through said ley-pass ferent diameters independently clamped at conduit.` 30 their outer edges within said casing,means l 7. In a pressure regulator, in comblnafor securing together portions ofthe central tion, a casing having gas inlet and outlet areas of said diaphragms, said diaphragms connections, a valvefor controlling the adbeing connected to said valve and adapted to nnssion of air into said casing, said easing operate the same, and means for connecting' having an inwardly extending annular ledge, 35 the space beneath one of said diaphragms a diaphragm clamped at its outer edges to with a space thereabove exteriorly of the l said ledge, a flexible diaphragm stretched joined portions of said diaphragms. l across saidcasing above said rst-mentioned In a pressure regulator, in combinadiaphragm and clamped at its outer edges tion, a casing having gas inlet and outlet therein, means for causing portions of the 40 openings, a valve for controlling. the admis central areas of said diaphragms, t-o lie in sion of gas into said casing, a flexible diacontact leaving an annular space between phragm stretched across said casing and the two at their outer, edges, and means for clamped at its outer edges toform one wall connecting the space below said first-meno the pressure chamber, a second flexible tioned diaphragm with the space between 45 diaphragm secured to said `first diaphragm, said diaphragms and for venting the latter lying in Contact therewith for a portion Vof space to the atmosphere. its central area, and clamped at its outer I In: testimony whereof I afliX my signature, edges to a ledge extending inwardly within i in the presence of two witnesses. the casing, said diaphragms near their outerl edges being spaced apart, a gas exit conduit Y GEORGE EGBERT HULSE leading from said casing' to the utilizing de- "Witnesses: vices, a by-pass conduit connecting said last- G. R. JEwE'r'r,

named conduit with the space provided be- E.`E. ALLBEE. 

